#define _CRT_SECURE_NO_WARNINGS 1
#include"test.h"

int main()
{
	char arr1[20]="hello";
	char arr2[20]="world";
	char arr3[] = "a";
	/*int ret1=My_strlen(arr1);
	printf("%zd\n",ret1);
	My_strcpy(arr2, arr1);
	printf("%s\n", arr2);
	printf("%s", arr3);*/
	char*ret=strcat(arr1, arr2);
	printf("%s", ret);
}